for i in &1..&2 error out

Hi all,

Please shed some light on how to get variables in the for for loop range.

1. if range are constants : for i in 1..2 , then no errors. <<---- OK

begin

for i in 1..2 loop

null;

end loop;

end;

/

2. However if for i in &1..&2 then error out <<<--------- ERROR

set define on <<--- if I put define on or without define on, still got the error.

begin

for i in &1..&2 loop

null;

end loop;

end;

Error report -

ORA-06550: line 2, column 14:

PLS-00103: Encountered the symbol "LOOP" when expecting one of the following:

* & - + / at mod remainder rem .. <an exponent (**)> ||

multiset

06550. 00000 - "line %s, column %s:\n%s"